@push.rocks/smartproxy
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A powerful proxy package with unified route-based configuration for high traffic management. Features include SSL/TLS support, flexible routing patterns, WebSocket handling, advanced security options, and automatic ACME certificate management.
29 lines (25 loc) • 633 B
text/typescript
/**
* Async concurrency semaphore — limits the number of concurrent async operations.
*/
export class ConcurrencySemaphore {
private running = 0;
private waitQueue: Array<() => void> = [];
constructor(private readonly maxConcurrency: number) {}
async acquire(): Promise<void> {
if (this.running < this.maxConcurrency) {
this.running++;
return;
}
return new Promise<void>((resolve) => {
this.waitQueue.push(() => {
this.running++;
resolve();
});
});
}
release(): void {
this.running--;
const next = this.waitQueue.shift();
if (next) next();
}
}